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太阳5分钟振荡的激发机制
熊大闰; 邓李才
2009
Source Publication天文学报
ISSN0001-5245
Volume50Issue:4Pages:349-355
Abstract<正>1引言太阳5分钟振荡是上世纪1个重要的发现,它使得人们可以通过观测太阳表面的振动来探测其内部的结构,日震学已取得了巨大的进展,然而我们至今仍不了解其脉动的激发机制,它依然是1个存在争议的问题.太阳位于造父变星脉动不稳定区之外,所以大多数人都相信,由于对流的阻尼,太阳是脉动稳定的,太阳和太阳型恒星的振荡都
Other AbstractThe excitation mechanism of solar five-minute oscillations is studied in this pa- per.We calculated the non-adiabatic oscillations of low-and intermediate-degree(l = 1-25) g4-p39 modes for the Sun.Both the thermodynamic and dynamic couplings are taken into account by using our non-local and time-dependent theory of convection.The results show that all the low-frequency f-and p-modes with periods P>5.4 minutes are pulsationally un- stable,while the coupling between convection and oscillations is neglected...
Keyword对流 太阳:振荡
Subject Area天文和天体物理
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/11211
Collection院士文集_熊大闰
Recommended Citation
GB/T 7714
熊大闰,邓李才. 太阳5分钟振荡的激发机制[J]. 天文学报,2009,50(4):349-355.
APA 熊大闰,&邓李才.(2009).太阳5分钟振荡的激发机制.天文学报,50(4),349-355.
MLA 熊大闰,et al."太阳5分钟振荡的激发机制".天文学报 50.4(2009):349-355.
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